857597128 has 8 divisors (see below), whose sum is σ = 1607994630. Its totient is φ = 428798560.

The previous prime is 857597087. The next prime is 857597149. The reversal of 857597128 is 821795758.

It is a happy number.

857597128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 857435524 + 161604 = 29282^2 + 402^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53599813 + ... + 53599828.

Almost surely, 2^857597128 is an apocalyptic number.

It is an amenable number.

857597128 is a deficient number, since it is larger than the sum of its proper divisors (750397502).

857597128 is a wasteful number, since it uses less digits than its factorization.

857597128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107199647 (or 107199643 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 52.

The square root of 857597128 is about 29284.7593126527. The cubic root of 857597128 is about 950.0820346518.

The spelling of 857597128 in words is "eight hundred fifty-seven million, five hundred ninety-seven thousand, one hundred twenty-eight".